Dial telephone



May 29, 192s. 1,671g1o2 J. J. DICKMAN DIAL TELEPHONE Fileg April 7, 1926 f vwentofc Patented May 29 1928. f

UNITED STATES JOSEPH J'. DIGKMAN, 0F IBROKLYN, NEW YORK.l

DIAL TELEPHONE.

Application med April 7, 192s. serial No. 100,218.

This invention relates to dial telephones and has as an object to provide an attachment for the dialscustomarily supplied by telephone companies, by means of whlch the dialing operation may be performed rapidly and conveniently. A

VOther objects and advantages of the invention will appear hereinafter.

A preferred embodiment of the invention selected for Apurposes of illustration is shown in the accompanying drawings, in which,

Figure 1 is a top plan view of a common type of dial showing the apparatus of the invention attached thereto.

Figure 2 is a side elevation on the line 2-2 of Figure 1.

Figure 3 is a perspective view of the device removed from the dial.

Telephone dials of the t-ype referred to herein ordinarily comprise a base 1 having a disk 2 secured thereto, and disk carrying numerals or other indicia 3. Rotatably mounted on the base 1 above the plate 2 is a second disk 4 having a series of apertures 5 therein which expose the indicia on the disk below. A fixed stop 6 is provided which is customarily attached to the fixed disk 2.

In normal operation in calling a desired station the user of the telephone inserts the index finger into the aperture of the disk 3 which exposes the number which it is A desired to call and then, using the linger as a pivot, rotates the disk 3 in a clockwise direction toward the fixed finger piece 6 until stopped thereby. Thereafter th'e finger is v removed and the disk 3 returns to normal position under the influence of a suitable spring. If a succession of numbers are to be called, this process isv repeated until the proper impulse is transmitted to theswitching apparatus.

According to the present invention it is proposed to provide an attachment by which this dialing operation may be performed Without using the finger asia pivot. .For this purpose, it is proposed to provide mea-ns to frictionally engage a suitable part of said rotatable disk 4, and to pivotally mount thereon an arm carrying a. knob adapted to engage any of -the apertures 5 and a handle by which the disk may be rotated.

Dials of the type illustrated are commonly provided with acap 7 fixed to the disk 4 and rotating therewith, said cap usually carrying indicia such as the station number. In the preferred embodiment of the invention illustrated herein, it has been found convenientvto provide means to frictionally engage said cap and accordingly a strip of metal 8 is provided toq span cap 7, said strip having its ends bent downwardly to provide flanges 9 and 9 to frictionally engage the outer periphery of the cap. Pivoted to the strip 8 at the center thereof and coincidently with the axis of rotation .of said disk4 is an arm 10 preferably of spring metal, said strip carrying at its outer .end a knob 1l adapted to engage the apertures of the disk 4 and a. handle 12 by means of which the device may be operated. Preferably a washer '13 surrounds the pivot to normally hold the knob' 11 in raised position above and out of engagement with said disk. l When it is desired to call a number the knob 11 is swung by the handle 12 to a position above the properaperture of the disk 4 and is then depressed to engage said aperture. The disk is then rotatedin a clockwise direction by the handle until stopped by the finger v.piece 7. If the handle is then released, the disk returns to normal position in the usual manner. In calling a successionl of numbers, the knob is successively swung to engage the proper apertures.

It will be observed .that the device may be attached to and removed from the dial without any modification or mutilation thereof.

It is to be understood that the invention may be variously modified and embodied within the scope of the subjoinedclaims.'

I claim as my invention:

1. An attachment for telephone dials having a rotatable disk provided with apertures, comprising. means adapted to frictionally engage said disk, and means pivotally mounted thereon to engage said apertures to rotate said disk.

2. An attachment for telephone dials having a rotatable disk provided with apertures, comprising. means adapted to frictionallyv engage said disk, and an arm pivotally mounted thereon. said arm being provided with a knob adapted to engage said apertures and a handle by means of which said arm and disk may be rotated.

3. An attachment for telephone dials having a rotatable disk provided with apertures, comprising. means adapted to frictionally engage said disk, and anl arm pivotally mounted thereon, said arm being of spring metal and provided with a. knob adapted to engage .said apertures. said parts being constructed and arranged to normally holdsaid knob above said disk.

4. An attachment for telephone'dials having a rotatable disk provided with apertures, comprising. means adapted to frictionally engage said/ disk, and an arm mounted thereon on a pivot whose axis is substantially coincident'\\'ith the axis of rotation of said disk. said armxbeing provided with a knob to engage said apertures.

5. An attachment for telephone dials haa;-

incT a rotatable disk provided with apera `tures. comprismm a `metal strip having Hannes to trietionallv encrage said disk an l* t 7 arm mounted thereon on a pivot Whose axis `spring metal and provided with a knobto l `circle of said'apertures, comprising means adapted to frictionally engage said flanged member, and an arm pivotally mounted thereon with its axis substantially coincident with the axis of rotation of the dial, said arm being provided with a knob adapted to engage said apertures and aV handle by Mmeans of `which said arm "and dial may be rotated.

In testimony whereof, I have signed my name to this specification this :25th day of March. 1996. i

JGSEPH J. DICKM AN. 

